Concrete-mixer.



. HADSEL.

CONCRETE MIXER.

APPLICATION FILED SEPT. 5,1908.

Patented Jan. 12, 1909.

3 SHEETS-SHEET 1.

3mm/nica no, .Caco

A. D. HADSEL.

CONCRETE MIXER.

APPLIOATION FILED SEPT. 5,1908.

Patented Jan. 12. 1909.A

3 SHEETSSHBET 2.

mmntov UNITED STATES ivan D. HADSEL. or vvILKEs-BABRE, PENNSYLVANIA.

No. 9o9,7e4. A speciaeation of CONCRETE-mn. s

Letters lfatent. PatentedJ 12, 1909.

Application mea september 5, isos. serial Np. 451,182.

/ To all whom it may concern:

Be it known that I, ALVAH D. HADSEL, a citizen of the United States, residing at Wilkes-Barre, in the county of Luzerne and vState of Pennsylvania, have invented-certain new and useful Improvements in Concrete-Mixers, of which the following is a specification.

This invention relates to concrete mixing machines, and hasv particular .reference to that type of these machines known as rotating, batch, non-tilting machines.

Among the several objects aimed at in this invention are to improve .the general construction of the -machines whereby a more rapid and thorough mixing of the concrete is effected, to increase the durability of the machine, to provide a maximum ing broken away; Fig. 3 is a detail strength of construction proportionate 'to the weight of material employed and yet to provide for ready repair ot' any parts which may become disabled, to secure the kgreatest ease of operation thereby requiring a minimum amount of horse power for operating purposes, and other advantages which will hereinafter more fully appear.-

For a full understanding of the invention, including its construction and characteristic advantages, reference is to be had to thefollowing detail description and the accom# panying drawings, in whichp Figure 1 is a generalperspective view of the invention; Fig. 2 is a vertical transverse section through the mixing drum, parts befperspective of one of the drum paddles an one of the dellecting brace members attached there to; Fig.4 is a detail-perspective of one of the drumface lates; Fig. 5 is a broken sectional view og) one of the end plate rings, 'and Fig. 6 is a detailsectional View indicating one A/of the bearing supports for the drum.

Throughout the following detail description, and on the several figures of the draw. ings, similar parts are referred' to by like reference characters.

By reference to Fig. 1 it willbe noted that this invention comprises generally4 speaking a frame l0 mounted in an vcon- Venient manner on truck wheels, w ereby v:from place to place.

the device may be supported or transported The d m 11.is of peculiar form and constructi n, and is mounted for rotation upon rollers journaled l in suitable bearings upon the frame I0. The

drum 11 is' of general prismatic form and comprises a plurality-.of similar rectangular fiat `:t'ace plates 13, illustrated especially in Fig. 4. As therein showneaeh of said plates -13 includes as integral parts thereof lateral flanges 14 extending at right` angles from the body of the plate, end flanges l5 extending from the hat 'portion' or' the plateat obtuse angles, and a central longitudinal toothed gear lsegment 16.- The several flangesand also the flat portion of the plate fully appear. The face plates 13 are at.-

are provided with a plurality of holes forattachmentpurposes, as .will hereinafter tached each to each 'at their oblique flanges 15, rivets or like fastening meansfbeing passed' through the holes therein for this purpose.

As illustrated in thevdrawings the drum is of octagonal form, but it will be understood that the precise number ofvfaces may be varied if desired. When the' face plates l are thus connected together the several gear segments 16 constitute in ell'ect a continuous gear wheel with which a driving pinion 17 it will be understood-will be driven from the engine 18 ina'conventienal manner.

The 'ends of thedrumconsist of polygonal plates 19, each of which will have as many edges] as thereare face plates 13, and to said end plates the lateral plate lianges 14 will be secured by means such as rivets passing throughthe holes thereof. Each lend plate y19 is provided with a central-opening, one for vthe therethrough into the'` drum and the other for the purpose of discharging the material. Surrounding each of said openings and secured rigidlyin any suitable manner to the is in permanent mesh. The power pinion'l? .urpose of receiving the material end plate is a heavyrigid' farin ring'20. Each of said rings comprises a bo y 'portion'l ing outwardly through said openings, which would be undesirable.

Since the drum is lilled'and' emptied along 110 the line of its axis of rotation it is essential that 'supportingmeans'for the drum be provided outside of said axis. The supporting means for the drum in this instance comprises a rigid annulus 23 secured concentrically upon the outer surface of each end plate and a plurality of rollers 24 journaled beneath the central axis of the drum upon supports journaled upon the frame 10. As illustrated each annulus consists of a body portion having a concave periphery and an inwardly projecting iiange 23, whereby the same is secured to its end plate. The rollers 2l complementally are convex for coperation with the concave periphery of the annuluses 23. By this construction several important advantages are accomplished. Each annulus constitutes a means whereby any material which may be scattered during the operation of dumping materials into the drum, forinstance, will be deflected from the rollers, and a further advantage lies in the fact that for' any ordinary Wear there may possibly be upon the bearing surfaces between the drum and the rollers, the drum will always be supported in such a manner as to prevent any lateral movement with respect to the supporting rollers, a matter of importance in machines of this type which v are driven by a single toothed gear wheel. A

serious defect heretofore existing in machines of this general class couslsts in the fact that the drums may shift laterally, causing breakage of the gear teeth.

The face plates 13 as well as the other parts ot' the construction may be made of any suitable materials. It has -been found,

however, that the face plates are preferably to be made of heavy cast iron and the end plates should `be of plate steel.

Thus far described the drum is well adapted for mixing urposes, due to the prismatic form thereo but for the purpose` of increasing the efficiency of the mixing druln and also to facilitate the discharge of materials therefrom, it is desirable to employ upon the interior thereofa series of' ftmg and mixing devices. As illustrated particularly in Figs. 2 and 3 said devices consist essentially of a plurality of paddles vso 25, each consisting of a scoo portion 26 and a lateral extension 27. he paddle is provided with a flange 28 at one end for attachment to one end plate, and the extension 27 extends from the longitudinal axis of the body ortion at an angle and is attached secure y to the opposite end plate by means of a flange 29. Theextension 27 constitutes a means for directing materials toward and into the scoop portion 26, during the rotation of the drum. that the preferred number ofl paddles will be equal to the number of face plates 13 and that a paddle will besecured to each of said plates. Each paddle will preferably be constructed of a single blank of sheet` metal. A.

series of deflecting' brace membersor bars 30 It willv be understood are provided, each of said members extending from the bottom of a scoop portion 26 i of one paddle to the lateral extension of the next paddle. As indicated each member 30 is riveted directly to said scoop portion 26 and is connected to the extension of the next by means 'of a connecting arm 31. The members 30 are spaced from their respective face` plates and extend at an angle to the lateral extensions to which they are connected. Not only do these members serve as bracing devices for the interior structure but also for the purpose of deflecting the materials toward that end of the drum away from which the lateral extensions 27 deflect the same. It will be seen therefore that the materials will be given a zigzag reciprocating motion from one end of the drum to the 4 For this purpose a pair of links or rods 34 are connected to the upper end of the frame 33 and to the outer end of thechute 32. As an illustration of a convenient means for supporting the chute 32 in it-sfdischarging posi.-

tion as illustrated, or for holding it in its outer position during the mixing o eration of the drum, there 1s indicated a ook 35 connected at one end to theframe 33 and detachably connected to the chute. It is to be understood that the form of the discharging means may be varied to a great extent Within the scope of the invention. As shown in Fig. 2 the mixed materials being lifted by the scoop portions of the paddles Willpbe dropped upon the receiving or inner end of the chute 32. Inasmuch as the scoop portions 26 are located substantially at one end of the drum, the chute 32 need 'not be so long as is usual in devices of this character.

It will of course be understood that the flarto the rum ends, will not have frictional contact with the chute 32 nor receiving spout I 36 secured to an suitable sup ort.

It is to be un erstood that t e several details of construction may be varied within the scope of this invention and without `departing from the spirit thereof as set forth in the claims hereinafter made.

Having thus described the invention, what is claimed as new, is: v

-1. The hereindescribed concrete mixer comprising a' rotary drum consisting of rectangular metal face plates each of which has integral side and end. flan es, means to secure the side ange's of a jacent plates together, end plates of polygonal form, means to secure the end plates to the end vflanges of the face plates, the respective sides of the end plates coinciding with the said face plates, each of the said endplates having a central opening, heavy metallic rings sur?v rounding said openings and secured to the plates and each having an inwardly projecting flare, means for supporting said drum and means for rotating lthe same.

In a device of the character set forth,- a mixer drum section consisting of a cast metal rectangular plate having integral side and end flanges, the end flanges being at an oblique angle to the said plate, and a central longitudinal integral gear segment extending between said side flanges.

3. In a concrete mixer, the combination with a drum comprising a'plurality of similar rectangular face plates, a pair of polyg? onal end plates to the respective sides of which the several face plates vare secured, and a paddle secured to the inner surface of each face plate and to both end plates, of reinforcing and supporting means therefor comprising an annulus having a vconcave outer periphery secured to the outer face of eachl end plate and a plurality of convex rollers l intermediate of its sides, and a pair of pod lygonal end plates secured to the saidrface plates, a supporting and reinforcing annulus secured concentrically to the outer face of 'each end plate and having a concave outer periphery, rollers having convex peripheries coperatmg with said annuluses, and means coperating with said gear segments to rotate the drum. y

5. In a concrete mixer, the combination with a drum havin an end plate with a central'opening theret irough, of a heavy annulus surrounding said opening, said annulus having a flat flange secured to the end plate v and a flaring deflectinlg Ilange extending in# A Wardly Within the drum.

In testimony whereof I affix my signature in presence of two Witnesses.

Witnesses EDMUND E. JONES, J. D. WILLIAMS..

ALVAH D. HAD'SEL. l' 

